Patent GB-105708-A (GB)
IPC: A01G25/09
Abstract: 105,708. Nyberg, C. S. Sept. 26, 1916. Crop-sprayers.-To spray or water gardens. fields, or the like, a Scotch turbine is traversed automatically along a cableway supported on posts 2, 3. The end posts 2, 3 may be either fixed in the ground and the required number of cableways arranged over the field between them or may be movable so that after a strip of the field has been watered the posts may be placed in position for watering the adjacent strip The turbine is carried in a frame 10 which is mounted by legs 9 on a carriage 6 provided with grooved wheels 8 to engage the cable. The mid-portion of the frame 10 is formed as a tube through which water flows from a hose-pipe 16 into the central tube 11 of the turbine which is provided with a collar engaging a projecting shoulder in the centre tube of the frame 10. The water passes through pipes 12 to the spraying nozzles 52 which are preferably flattened and which have a number of radially disposed discharge openings increasing in size from the inmost to the outermost openings which are nearly perpendicular and parallel to the turbine arm respectively. Vanes 54 may be adjusted on the arms to vary the speed of rotation and the spread of the water may be controlled by turning the nozzles to a more or less vertical position. The tube 11 carries a pinion which can he moved to mesh with one or other of two gear wheels 21, 22 on shafts 23, 24 mounted in the frame 10 and carrying friction wheels 25, 26 adapted to engage the cable 1. The turbine thus moves in one direction or the other along the cable in accordance with the particular gear wheel with which the pinion meshes. To reverse automatically the direction of movement of the turbine, spring stops 36 mounted on the cable are adapted to engage arms 33, 34 operating a lever 31 which at its lower end moves in an inclined slot in a second lever 29, which supports the lower bearings of the shafts 23, 24. The movement of the lever 29 due to the movement of the lever 31 along the slot throws the one gear wheel out of and brings the other gear wheel into operative position. The hose-pipe, which is drawn out by the movement of the turbine along the cable, is provided with a number of clips 39 carrying rollers 40 adapted to run on the cable. The hose is positioned relatively to the cable by a guide 55 mounted on the main support 2 and preferably provided with a friction roller. The hose reel 17 is mounted on a hollow shaft through which water from a stationary water pipe 19 is fed to the hose-pipe. Bars 43, which project from one rim 42 of the reel, are provided with projections 44 adapted to catch projections 76 extending outwardly from the clips 39 thus preventing stretching of the hose on the reel as it is being wound up. The reel is driven to wind up the hose by a turbine situated in the watersupply pipe and adapted to rotate a driving-wheel for the reel through worm gear A chain driven by the hose reel and provided with adjustable stops automatically connects and disconnects this gearing in agreement with the movements of the spraying-device. Fertilizer in solution may be introduced into the water. The fertilizer which is contained in a tank 49 is pumped by a pump operated from the reel 17 along a pipe communicating at a desired point with the water conduit. In a modified form. two cables are fitted, the carrying frame for the turbine then being provided with two pairs of supporting-wheels.